iOS (jailbroken): Google recently updated its Search app on iOS to include Siri-like voice searches, and if you like Google's offering better (or can't get Siri on your device), free tweak NowNow let you launch Google's voice search with a shortcut—just like Siri.

Jailbreaking is a process that changes little by little with each iOS upgrade. Rather than always…
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After installing NowNow (and Google Search, obviously), just head to your Settings app, scroll down to NowNow, and choose which shortcut you'd like to use for Google's voice search (I used a triple-tap on the home button). From then on, invoking that shortcut will bring up Google's search app and go straight to voice search, giving you quicker access than you could get from the home screen. From there you can get directions, look up information, and do anything else with just a few simple words. Check out the video above from AppAdvice to see it in action.

NowNow is a free download for jailbroken iPhones, available in the BigBoss repository.